html, body{
    margin: 0;
    padding: 0;
    height: 100%;
    width: 100%;

    background: url('/assets/images/login_bg.jpg')
    no-repeat center;
    background-size: cover;
}
.loginandregBox{
    width: 400px;
    height: 310px;
    background-color: aliceblue;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);    
}
.title-box{
    height: 60px;
    background: url('/assets/images/login_title.png')
    no-repeat center;
}
.reg-box{
    display: none;
}
.layui-form{
    padding: 0 30px;
}